CP9? No, These Are "Blood Servants"

There were only two ways to avoid being affected by Oak's Vampire Power. One was powerful Haki. And with Oak's current growth in strength and development of his abilities, the Haki needed to overcome the effects of his Vampire Power had to be among the strongest in the world—like that of the Four Emperors or Admirals.

Even Tsuru's Haki had never been able to completely rid her of the effects of his Vampire Power over all these years. Some still remained in her body; otherwise, she would not have been able to maintain such a youthful appearance.

Clearly, Rob Lucci and Kaku did not possess Haki of that level. Oak had not even sensed the slightest trace of Haki within them, which meant they had yet to awaken that power.

The other way was to possess a powerful will and rely on it to overcome the influence and control of Vampire Power. The most typical example was Conqueror's Haki. Once someone awakened Conqueror's Haki, Oak's Vampire Power was basically ineffective against them.

Although Rob Lucci and Kaku did not possess Conqueror's Haki, and Oak did not know whether they had the qualities of kings, their willpower was absolutely among the strongest in this world. That could be seen from how, two years later, they would each develop their abilities to the point of awakening.

Awakening a Devil Fruit ability was not something easily achieved. Not only did one need to develop one's own abilities to the limit, one also had to struggle against the demonic power within. This was especially apparent for Zoan users, because the demonic consciousness of Zoan Devil Fruits was stronger than that of other types. Once they failed during the awakening process, the demon would seize their consciousness, turning them into a true beast.

Thus, those